smc9194.h
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- /*------------------------------------------------------------------------
- . smc9194.h
- . Copyright (C) 1996 by Erik Stahlman
- .
- . This software may be used and distributed according to the terms
- . of the GNU General Public License, incorporated herein by reference.
- .
- . This file contains register information and access macros for
- . the SMC91xxx chipset.
- .
- . Information contained in this file was obtained from the SMC91C94
- . manual from SMC. To get a copy, if you really want one, you can find
- . information under www.smc.com in the components division.
- . ( this thanks to advice from Donald Becker ).
- .
- . Authors
- . Erik Stahlman ( erik@vt.edu )
- .
- . History
- . 01/06/96 Erik Stahlman moved definitions here from main .c file
- . 01/19/96 Erik Stahlman polished this up some, and added better
- . error handling
- .
- ---------------------------------------------------------------------------*/
- #ifndef _SMC9194_H_
- #define _SMC9194_H_
- /* I want some simple types */
- typedef unsigned char byte;
- typedef unsigned short word;
- typedef unsigned long int dword;
- /* Because of bank switching, the SMC91xxx uses only 16 I/O ports */
- #define SMC_IO_EXTENT 16
- /*---------------------------------------------------------------
- .
- . A description of the SMC registers is probably in order here,
- . although for details, the SMC datasheet is invaluable.
- .
- . Basically, the chip has 4 banks of registers ( 0 to 3 ), which
- . are accessed by writing a number into the BANK_SELECT register
- . ( I also use a SMC_SELECT_BANK macro for this ).
- .
- . The banks are configured so that for most purposes, bank 2 is all
- . that is needed for simple run time tasks.
- -----------------------------------------------------------------------*/
- /*
- . Bank Select Register:
- .
- . yyyy yyyy 0000 00xx
- . xx = bank number
- . yyyy yyyy = 0x33, for identification purposes.
- */
- #define BANK_SELECT 14
- /* BANK 0 */
- #define TCR 0 /* transmit control register */
- #define TCR_ENABLE 0x0001 /* if this is 1, we can transmit */
- #define TCR_FDUPLX 0x0800 /* receive packets sent out */
- #define TCR_STP_SQET 0x1000 /* stop transmitting if Signal quality error */
- #define TCR_MON_CNS 0x0400 /* monitors the carrier status */
- #define TCR_PAD_ENABLE 0x0080 /* pads short packets to 64 bytes */
- #define TCR_CLEAR 0 /* do NOTHING */
- /* the normal settings for the TCR register : */
- /* QUESTION: do I want to enable padding of short packets ? */
- #define TCR_NORMAL TCR_ENABLE
- #define EPH_STATUS 2
- #define ES_LINK_OK 0x4000 /* is the link integrity ok ? */
- #define RCR 4
- #define RCR_SOFTRESET 0x8000 /* resets the chip */
- #define RCR_STRIP_CRC 0x200 /* strips CRC */
- #define RCR_ENABLE 0x100 /* IFF this is set, we can receive packets */
- #define RCR_ALMUL 0x4 /* receive all multicast packets */
- #define RCR_PROMISC 0x2 /* enable promiscuous mode */
- /* the normal settings for the RCR register : */
- #define RCR_NORMAL (RCR_STRIP_CRC | RCR_ENABLE)
- #define RCR_CLEAR 0x0 /* set it to a base state */
- #define COUNTER 6
- #define MIR 8
- #define MCR 10
- /* 12 is reserved */
- /* BANK 1 */
- #define CONFIG 0
- #define CFG_AUI_SELECT 0x100
- #define BASE 2
- #define ADDR0 4
- #define ADDR1 6
- #define ADDR2 8
- #define GENERAL 10
- #define CONTROL 12
- #define CTL_POWERDOWN 0x2000
- #define CTL_LE_ENABLE 0x80
- #define CTL_CR_ENABLE 0x40
- #define CTL_TE_ENABLE 0x0020
- #define CTL_AUTO_RELEASE 0x0800
- #define CTL_EPROM_ACCESS 0x0003 /* high if Eprom is being read */
- /* BANK 2 */
- #define MMU_CMD 0
- #define MC_BUSY 1 /* only readable bit in the register */
- #define MC_NOP 0
- #define MC_ALLOC 0x20 /* or with number of 256 byte packets */
- #define MC_RESET 0x40
- #define MC_REMOVE 0x60 /* remove the current rx packet */
- #define MC_RELEASE 0x80 /* remove and release the current rx packet */
- #define MC_FREEPKT 0xA0 /* Release packet in PNR register */
- #define MC_ENQUEUE 0xC0 /* Enqueue the packet for transmit */
-
- #define PNR_ARR 2
- #define FIFO_PORTS 4
- #define FP_RXEMPTY 0x8000
- #define FP_TXEMPTY 0x80
- #define POINTER 6
- #define PTR_READ 0x2000
- #define PTR_RCV 0x8000
- #define PTR_AUTOINC 0x4000
- #define PTR_AUTO_INC 0x0040
- #define DATA_1 8
- #define DATA_2 10
- #define INTERRUPT 12
- #define INT_MASK 13
- #define IM_RCV_INT 0x1
- #define IM_TX_INT 0x2
- #define IM_TX_EMPTY_INT 0x4
- #define IM_ALLOC_INT 0x8
- #define IM_RX_OVRN_INT 0x10
- #define IM_EPH_INT 0x20
- #define IM_ERCV_INT 0x40 /* not on SMC9192 */
- /* BANK 3 */
- #define MULTICAST1 0
- #define MULTICAST2 2
- #define MULTICAST3 4
- #define MULTICAST4 6
- #define MGMT 8
- #define REVISION 10 /* ( hi: chip id low: rev # ) */
- /* this is NOT on SMC9192 */
- #define ERCV 12
- #define CHIP_9190 3
- #define CHIP_9194 4
- #define CHIP_9195 5
- #define CHIP_91100 7
- static const char * chip_ids[ 15 ] = {
- NULL, NULL, NULL,
- /* 3 */ "SMC91C90/91C92",
- /* 4 */ "SMC91C94",
- /* 5 */ "SMC91C95",
- NULL,
- /* 7 */ "SMC91C100",
- /* 8 */ "SMC91C100FD",
- NULL, NULL, NULL,
- NULL, NULL, NULL};
- /*
- . Transmit status bits
- */
- #define TS_SUCCESS 0x0001
- #define TS_LOSTCAR 0x0400
- #define TS_LATCOL 0x0200
- #define TS_16COL 0x0010
- /*
- . Receive status bits
- */
- #define RS_ALGNERR 0x8000
- #define RS_BADCRC 0x2000
- #define RS_ODDFRAME 0x1000
- #define RS_TOOLONG 0x0800
- #define RS_TOOSHORT 0x0400
- #define RS_MULTICAST 0x0001
- #define RS_ERRORS (RS_ALGNERR | RS_BADCRC | RS_TOOLONG | RS_TOOSHORT)
- static const char * interfaces[ 2 ] = { "TP", "AUI" };
- /*-------------------------------------------------------------------------
- . I define some macros to make it easier to do somewhat common
- . or slightly complicated, repeated tasks.
- --------------------------------------------------------------------------*/
- /* select a register bank, 0 to 3 */
- #define SMC_SELECT_BANK(x) { outw( x, ioaddr + BANK_SELECT ); }
- /* define a small delay for the reset */
- #define SMC_DELAY() { inw( ioaddr + RCR );
- inw( ioaddr + RCR );
- inw( ioaddr + RCR ); }
- /* this enables an interrupt in the interrupt mask register */
- #define SMC_ENABLE_INT(x) {
- unsigned char mask;
- SMC_SELECT_BANK(2);
- mask = inb( ioaddr + INT_MASK );
- mask |= (x);
- outb( mask, ioaddr + INT_MASK );
- }
- /* this disables an interrupt from the interrupt mask register */
- #define SMC_DISABLE_INT(x) {
- unsigned char mask;
- SMC_SELECT_BANK(2);
- mask = inb( ioaddr + INT_MASK );
- mask &= ~(x);
- outb( mask, ioaddr + INT_MASK );
- }
- /*----------------------------------------------------------------------
- . Define the interrupts that I want to receive from the card
- .
- . I want:
- . IM_EPH_INT, for nasty errors
- . IM_RCV_INT, for happy received packets
- . IM_RX_OVRN_INT, because I have to kick the receiver
- --------------------------------------------------------------------------*/
- #define SMC_INTERRUPT_MASK (IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT)
- #endif /* _SMC_9194_H_ */